Yup, I want to see the trailer to get excited. Also, right before I'm going to purchase both the extended release versions of LotR and tTT (haven't bought them yet, I'm such a geek wannabe).
As for LotR versus tTT, I enjoyed both movies. As for the changes, I didn't know or care what they changed or why. It is just enjoyed it for they are, movies. If I want drama, I'll watch a play
I do think it's a good thing they filmed all the movies at the same time, lest they try to "hunkify" Legolas character; I hear a lot of women loved him. *shrug* go figure.